This is a new mesh, and means that it's a brand new self contained object that usually does not require a specific Expansion pack (although this is possible depending on the type). It may have Recolours hosted on MTS - check below the description for more information.

Here's a TS4 version of my TS3 small round glasses and small round shades. They are for male and female, Teen to Elder. They are not enabled for Random.

The clear glasses and the sunglasses come in 10 recolours each, as follows:

Recolouring: I've uploaded a zip file containing recolour templates for each set of glasses in case you want to make recolours, so that you can see what goes where. I really love how we can easily recolour lenses in TS4, unlike previous games - play around with the lens alpha transparency on the shades to obtain different effects with depth of colour.